feat(hub): background chart poll with SSE for positions and market watch

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_hub_chart_cache.py

@@ -0,0 +1,58 @@
+"""行情区 chart 后台轮询订阅。"""
+from __future__ import annotations
+
+import asyncio
+import sys
+import unittest
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+sys.path.insert(0, str(ROOT / "manual_trading_hub"))
+
+from hub_chart_cache import ChartPollStore, series_key  # noqa: E402
+
+
+class TestHubChartCache(unittest.TestCase):
+    def test_series_key(self) -> None:
+        self.assertEqual(series_key("Gate_X", "hype/usdt", "5m"), "gate_x|HYPE/USDT|5m")
+
+    def test_position_and_watch_keys(self) -> None:
+        store = ChartPollStore()
+        store.sync_positions_from_rows(
+            [
+                {
+                    "key": "okx_auto",
+                    "agent": {
+                        "ok": True,
+                        "positions": [{"symbol": "BTC/USDT"}, {"symbol": "ETH/USDT"}],
+                    },
+                }
+            ]
+        )
+        store.touch_watch("gate_trend", "HYPE/USDT", "5m")
+        keys = store.active_series_keys()
+        self.assertIn(series_key("okx_auto", "BTC/USDT", "5m"), keys)
+        self.assertIn(series_key("gate_trend", "HYPE/USDT", "5m"), keys)
+
+    def test_poll_increments_version(self) -> None:
+        async def run() -> None:
+            store = ChartPollStore()
+            n = 0
+
+            async def poll():
+                nonlocal n
+                n += 1
+                store.touch_watch("binance", "BTC/USDT", "1d")
+                return {"ok": True, "n": n}
+
+            await store.start(poll)
+            await asyncio.sleep(0.05)
+            self.assertGreaterEqual(store.version, 1)
+            await store.stop()
+
+        asyncio.run(run())
+
+
+if __name__ == "__main__":
+    unittest.main()